This a classic, as the C12. It is maybe the grail of recording compressor. Rebuild one like before is already something hard, but add functions without demeaning is artwork. So I had to ask an artist to do it. This person is Gwyn Mathias. I am happy to know him for his anecdotes alone. But there is a lot more and you can figure it out when you embrace his work.
Technically, we scouted NOS element and Sowter transformer, based on the opto6 PCB from Drip. Output caps are German and Russian. Yes, both and a hidden switch can toggle between them. Also, the VU change in color to let you know which is engaged. The detection cell is not alone either. There is a fast and a slow one (drip T4b). Also, earth can be lift on input and output separately. Sound like a details but…
After trowing all those parts, build it, and of course calibrated it, here is the masterpiece:
lupanarstudio 